For water well drilling / pump installation / fishing.
Honestly don't know what this is, but appears to have a good 2-1/4" x 3-1/4" thread.
Presumably American manufactured with carbon and/or alloy steels, but unsure if this is Acme, Spang, Gill Rock Drill, Ideco, Trident, Rampp, O.W.S. Co., Keystone or maybe another historical tooling manufacturer.
If you require thread protector(s) on tool joint(s) add another $15.